feat: add utility functions to core package

Author: Umutcan ÖNER

packages/core/src/utils.ts

@@ -0,0 +1,11 @@
+/**
+ * Utility functions for the core package
+ */
+
+export function formatDate(date: Date): string {
+  return date.toISOString().split('T')[0];
+}
+
+export function generateId(): string {
+  return Math.random().toString(36).substring(2, 15);
+}